Effect of Segregation of Secondary Phase Particles and “S” Line on Tensile Fracture Behavior of Friction Stir-Welded 2024Al-T351 Joints

Zhang, Z.; Xiao, B.L.; Y., Z.

doi:10.1007/s11661-013-1778-8

Cited by 39 publications

(12 citation statements)

References 38 publications

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“…Kadlec et al [18] studied the influence of the size of the kissing bond in FSW AA7475, while, it was found that a large kissing bond did not have a significant effect on the mechanical properties compared to flawless FSW joints. Besides, The kissing bond did not affect the fracture behaviour also in AA2024-T351 FSW weld studied by Zhang et al [29].…”

mentioning

confidence: 64%

Influence of the kissing bond on the mechanical properties and fracture behaviour of AA5083-H112 friction stir welds

Zhou

Song

et al. 2018

Materials Science and Engineering: A

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Where a licence is displayed above, please note the terms and conditions of the licence govern your use of this document. When citing, please reference the published version. Take down policy While the University of Birmingham exercises care and attention in making items available there are rare occasions when an item has been uploaded in error or has been deemed to be commercially or otherwise sensitive.

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mentioning

confidence: 64%

Influence of the kissing bond on the mechanical properties and fracture behaviour of AA5083-H112 friction stir welds

Zhou

Song

et al. 2018

Materials Science and Engineering: A

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“…According to Sato and coworkers, in the as-welded condition, the "S" line is composed of broken oxide particles, and these broken oxide particles disperse along the fine equiaxed grain boundaries [24]. Zhang et al [25] concluded that the ''S'' line originated from the oxide film on the initial butting surfaces and experienced only the thermomechanical deformation process without a change in the chemical composition. The morphologies of the segregation bands and the "S" line were dependent on the welding parameters.…”

Section: Microstructure Of the Jointsmentioning

confidence: 99%

Effect of Tool Rotational Speed on the Microstructure and Mechanical Properties of Bobbin Tool Friction Stir Welded 6082-T6 Aluminum Alloy

Sun

Gong

2019

Metals

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Samples of 6082-T6 aluminum alloy were welded by bobbin tool friction stir welding at different rotational speeds. The thermal cycles, microstructure, microhardness, and tensile properties of the specimens were investigated. The results show that the maximum temperature at the joint increases first and then decreases with increasing rotational speed, and the maximum temperature is 509 °C at 1000 r/min. The macromorphology of the cross-section of the joint is rectangular, and an ‘’S” line and gray-white texture can be observed. The stirred zone had much smaller equiaxed recrystallized grains. With increasing welding speed, the average grain size in the stirred zone region decreases. The microhardness distribution of the cross-section of all joints is W-shaped. When the rotational speed increases, the hardness of the heat-affected zone decreases gradually, and the hardness of the stirred zone increases. At 600 r/min, the strength is the lowest. The fracture location is between the stirred zone and the thermomechanically affected zone. When the rotational speed is increased, the fracture location is entirely located in the heat affected zone, and the fracture surface is dimple-like; the strength significantly increases and reaches a maximum at 800 r/min.

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“…Joint line remnant (JLR) is often observed in the FSW and interpreted as remnant oxide films originated from the butt interface during welding [17][18][19][20][21][22]. Generally, the JLR does not cause loss of mechanical properties of as-welded joints [18,20,22], but it seriously compromises those of heat-treated joints [20] and also results in preferential etching [18].…”

Section: Joint Line Remnant and Materials Flowmentioning

confidence: 99%

“…the length of the JLR becomes shorter in both the horizontal and vertical directions. This fact can probably be attributed to a higher degree of stirring caused by higher rotational speed leading to the wider and more dilute distribution of the oxide particles [19,21].…”

Section: Joint Line Remnant and Materials Flowmentioning

confidence: 99%

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Effect of tool rotational speed on the microstructure and mechanical properties of bobbin tool friction stir welding of Al–Li alloy

et al. 2015

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Effect of tool rotational speed on the microstructure and mechanical properties of bobbin tool friction stir welding of Al-Li alloy, (2015), AbstractA third-generation Al-Li alloy AA2198 has been successfully welded by bobbin tool friction stir welding. The stirred zone, displaying an hourglass shape, consists of recrystallized Al grains and precipitates remaining in solution. Joint line remnants have been found in all etched welds. Symmetrical hardness profiles have been obtained in the thickness direction, which indicates that the joints have homogenous through-thickness mechanical properties. As the rotational speed increases, the grain size of the stirred zone increases, whereas the density of strengthening particles decreases; the joint line remnants become compressed remarkably in the shoulder-dominated zone while less changes occur in the probe-dominated zone; the softest region shrinks and shifts outward, the average hardness of the stirred zone increases and the hardness profile along the cross section of the joint changes from the U-shaped to W-shaped. The tensile strength of the joint initially increases with rotational speed and then decreases with the maximal strength efficiency reaching 80%; three fracture modes have been observed and cracking initiates at the joint line remnant propagating towards the heat-affected zone, and finally to the border between the thermal-mechanically affected zone and stirred zone.

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Effect of Segregation of Secondary Phase Particles and “S” Line on Tensile Fracture Behavior of Friction Stir-Welded 2024Al-T351 Joints

Cited by 39 publications

References 38 publications

Influence of the kissing bond on the mechanical properties and fracture behaviour of AA5083-H112 friction stir welds

Influence of the kissing bond on the mechanical properties and fracture behaviour of AA5083-H112 friction stir welds

Effect of Tool Rotational Speed on the Microstructure and Mechanical Properties of Bobbin Tool Friction Stir Welded 6082-T6 Aluminum Alloy

Effect of tool rotational speed on the microstructure and mechanical properties of bobbin tool friction stir welding of Al–Li alloy

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